Video Compression: 

H.264

Analog and HD-TVI Video Input: 

4-ch, BNC interface (1.0Vp-p, 75 Ω)

Audio Compression: 

G.711u

Audio Input: 

1-ch

Audio Input Interface: 

RCA (2.0 Vp-p, 1 kΩ)

Two-way Audio: 

1-ch (Audio In)

VGA Output: 

1-ch, resolution: 
1920×1080P/60Hz,1280×1024/60Hz,1280×720/60Hz, 1024×768/60Hz

HDMI Output: 

1920 × 1080 / 60 Hz,1280 × 1024 / 60 Hz, 1280 × 720 / 60 Hz, 1024 × 768 / 60 Hz

Recording resolution: 

Main stream: 720P(non-real-time)  / VGA / WD1 / 4CIF / CIF;
Sub-stream:  4CIF(non-real-time) / CIF / QCIF / QVGA

Frame Rate: 

1/16 fps ~ Real time frame rate

Video Bit Rate: 

32 Kbps-6 Mbps

Stream Type: 

Video/Video&Audio

Audio Output: 

1-ch RCA(Linear, 1kΩ)

Audio Bit Rate: 

64kbps

Dual Stream: 

Support

Playback Resolution: 

720P / VGA / WD1 / 4CIF / CIF / QVGA / QCIF

Synchronous Playback: 

4-ch

Interface Type: 

1 SATA Interface

Capacity: 

Up to 4TB capacity for each disk

Network Interface: 

1 RJ45 10M/100M adaptive Ethernet Interface

USB Interface: 

2 USB 2.0 Interfaces

Serial Interface: 

1 RS-485 interface

Power Supply: 

12V DC

Consumption: 

≤ 15W

Working Temperature: 

-10 °C ~ +55 °C (14 °F ~ 131 °F)

Working Humidity: 

10% ~ 90%

Chassis: 

1U chassis

Dimensions: 

315 × 242 × 45mm (12.4 × 9.5 × 1.8 inch)

Weight: 

≤ 1.5Kg (3.3lb)